Telegraph-receiver.



C. E. SGRIBNEE,

TELEGRAPH RECEIVER.

APPLICATION FILED NDV. 28, 1911.

gy gr y Patented Aug. 18, 19M.

2 SHEETSSHEET l.

U. E. SORIBNER.

TELEGRAPH RECEIVER,

APPLIGATION FILED NOV. 28, 1911.

1 1 97 351 Patented Aug. fill Z SHEBTBSHEETZ.

Elli

nitrate erases CHARLES E. SCRIBNER, 0F JERICHO,

COMPANY, 01* NEW' YORK,

VERMONT, ASSIGNGR TO VIESTEBN ELECTRIC N. Y., A CORPORATION OF ILLINOIS.

' TELEGRAIH-RECEIVER.

Application filed l ovember 28, 1911.

Jericho, in the county of Chittenden. and.

State of Vermont, have invented a certain new and useful Improvement in Telegraphltcceivers, of which the following is a full, clear, concise, and exact description.

This invention relates to printing telegraphs and more particularly to a printing telegraph receiver in which the characters are selected by a combination of two impulses receivcd over either one or both of two main line-conductors and in which the second impulse of a combination is never of the same character as that of the first.

More particularly this invention relates to a printing telegraph receiver in which the character selecting impulses are received from the distant station by a selecting apparatus, which apparatus has a receiving relay for each characteristic impulse and in which the first impulse of a combination of impulses energizes and locks up a selected relay, which relay remains locked up until the printing operati n has taken place.

Another object of this invention is to provide a. prniting telegraph receiver in which is provided 'a plurality of type magnets, each certain polarity,

hcing provided with two encrenergizing windings of each magnet being arranged in different loops of a selecting circuit, the different loops being closed by 'a plurality of relays in the selecting circuit.

In the drawings l igures 1 and 2 combined illustrate diagrammatically a complete receiving system and in which so much of the mechanical details as are necessary to type magnet gizmgwindings, the

understand the operation thereof are shownin perspective.

In Fig. 1 is shown the main line conductors L and L connected to the selecting apparatus, the relays of which are designated by the numerals 1 to 8 inclusive, relays nunr be'red 1 to 6 responding only to currents of as shown, while 7 and 8 respond to all impulses over the .correspoml ing line. Connected to the front contacts of the polar relays are a plurality of type magnets which, as a matter of convenience, are designated by a numeral corresponding to the combination of polarized relaysnecessary to'select the same. For example, the selection of magnet 12 requires the energizespecifieation of Letters Patent.

Patented Aug. 1%}. 1914i. Serial no. 662,845.

tion of polarized relays 1 and 2, etc. These magnets are marginal in operation, that is, it reouires a flow of currentthrough both of their cu-mi'llative windings to efi'ect operation. The windings of these type magnets" are-shown as arranged intwo loops, one loop, including, for example, the upper winding of the type magnets 12,13, l t, 15 and 16, the other loop, including the lower winding of will be noted that the upper loop of each group"passes through the energizing winding of theunit relays 100,101, 102, 103 and 104, respectively, while the lower loop of each group of type magnets is connected to the hack contacts of the'unit relays, respec tively. The windings of the unit relays all terminate in contacts at the armature of the vswitching relay 105, which armature is directly connected to the source of current 1.06. This switching relay 105 is in a circuit which includes the locking winding of the polar relays 1 to 6 inclusive and the resistance 107, which resistance is in parallel with the armature 108 of the starter relay 109. Briefly, an impulse arriving over one or both of the main line conductors passes through and cncrgihes a selected one of the polar relays,- which in turn is locked up completing a circuit through the upper loop of a selected group of type magnets, through a selected unit relay, the armature of the switching relay, to battery 106. This circuit also passes through through the resistance 107 of the starter relay 109 to ground. The. switchin relay is energized, attracting its armature, utthe selected unit relayis quicker actingthan the cuit for tself through itsright-hand arma ture and directly to the battery 106 before the armature of relay 105 is attracted;

The second impulse of a combination is never identical with that of the first impulse, so thattho second impulse, when it another one of the polar relays, completing in this manner the lower loop of the selecting ei.rcuit,'wl'1ich lower loop will in- .clude the'lower winding of one of the type magnets whose upper winding is included .in the upper loop, circuit from battery starter relay 109, and

110, through the initiating the printthe type magnets 21, 31, 41, 51 and 61. It

switching relay and completes a locking cir-.

thereby completing a arrives at the selecting circui. over the main line conductor or conductors, will energize I ing operation. The type magnets are grouped in a circle about the type shaft .10 attracts its arn'iature the latter portion 201 as shown at the left of Fig. 2 and each of the path of this circuit will be in paris provided with an armature 199 extending allel to ground through the resistance 107 5 inward into a position to contact with the and. the armature 108. Relay 3 is locked -arm 200 when the -corrcsponding pair of up by the circuit just traced and the shuntwindings is energized. ing of the resistance 107 by the armature A suilicient description of the circuits 108 will cause an increase in the flow of and apparatus will appear from the opera current through theupper and lower wind- 10 tion of selecting a )1 'cdetermined type maging of the type. magnet 13, this magnet 75 net, the shift, space, reset and paper lift being the one having both its windings in magnets. the circuit traced. This type magnet Will,

Let it be assumed that the operator at therefore, attract its armature 199 raising the distant end of the line wishes to select t e nn r end t eo i to the path o t e at the apparatus shown "on Figs, .1 and radial arm 200 on the type shaft 201. go

2' a type magnet to print the letter A. on Starter relay 100 attracts its armature 111 the paper or record medium. Let it be furcompleting a circuit for the stop magnet ther assumed that the combination of im- 202- and the printing magnet 203, which pulses necessaryto select this character is circuit may be traced from battery 112,

2c composed of two impulses, the first impulse armature 113 of the clearing-out relay 114:, 35 being positive over line L and the second spacing magnet 204:, printing magnet 203, impulse positive over line L, the two im- 'stop,1nag11et 202, armature 111 of the starter pulses being separated by an interval of relay 109, to ground. As a result of the no current. The first impulse of the comclosure of this last circuit printing magnet bi ti will pass th gh the nergizing 203 attracts its armature 205. Stop magnet 9 windings of the line relays 1 and 2 to 202 attracts its armature moving the pawl ground, through the armature f th n n- 200 at the outer end thereof out from eng relay 7, ly relay 1, however, becomgagcm'cnt with the ratchet 207 .on the type ing active. As a result of this impulse, the shaft 201. Type shaft 201 starts to revolve so armature of relay 1 is attracted, completinthe direction of the arrow shown, power 95 ing a circuit which flows fromhattery 106, being derived for his purpose from the through the armature of switching relay motor208. 4 r 105, energizing winding of unit relay 102, At the upper end of the type shaft 201 is through the-upper loop of the type magnets ShOWIl type Wheel c rrying t ereon 10, 15, 1 1, 13 and 12, in series in the order two rows of type, the upper row of type bewe named, armature and locking winding of ing the one from which characters are ordi; h relay 1 it hi r lay 105, resistance narily printed. This type wheel is slid-able 107, armature 117 ofrelay 114: to ground. on the shaft 201 and may be moved upward Switching relay 105 attracts its armature to bring the lower row of type into printing 40' but the unit relay 102, being quicker acting position by means which will be hereinafter than the switching relay 1.05, completes a described. This type shaft 201, when relockingcircuit for itself directly from the leased by the pawl 200, will revolve until battery 106, through its right-hand armabrought to a stop by the radial arm 200 con ture and Winding before the circuit first tacting with the outer end of the'armature 45 traced is broken at the armature of the of the energized type magnet, when it will switching relay. The second impulse of the be brought to rest with the character on the combination follows the first after a short type wheel, corresponding to theenergized interval of time, passing through and err type magnet, in position to print a character ergizing the polar relay 3, which attracts on the paper. lVhen the radial arm 200 50 its armature. This second impulse will not contacts with the outer end of the'armature complete a circuit throughthe upper loop of the energized type magnet, a circuit is;

Y. of a group of type magnets, as was the case completed which may be traced from battery with the first impulse, the path to the bat- 112, clearing-out relay 114, armature190 of. tery 106 being broken-attire armature of, the energized typemagnet, radial arm 200,

55 the'switching relay. The .circuit closed-by? to ground. The armature 113 of the clearthis second impulse is, therefore, completed ing-out relay is attracted, breakingthe cirthrough the lower loop-of a group of type L cuit through the spacing, printing and'stop magnets, which circuit may be traced from magnets. Armature 117 -iS attracted, re: c

' the battery 110;. starter relay 109, left-hand" mo'vin ground from the selectingv circuit I 66 armature of'theunit relay 103, through the heretofore traced, which is thus 'retu'rneel to 12,5 lower windings of the type magnets 63, 53, normal. The armature 205 of the printing 13,23 and 13, in series in the order named, magnet is retracted by the spring 212 and armature and locking Winding of the polar the selected character is printed on the relay 3, switching. relay 105, to ground paper. Vv'hen the armature 113 of the clear- 65 through the resistance 107 and. armature 117 of rclav 114, and. as the starter relay ingsout relay reaches its front stop, a circuit some? is closed through the retractor magnet 216, which may be traced from battery 112., through the retractor magnet, to ground. The retractor magnet by the pawl 21? on the outer and ot the armature thereof moves the type shaft 201 in the reverse direction, moving the radial arm 200 out of contact with the armature of the energized type magnet, thereby breaking the circuit which has heretofore existed from the battery 112, through the clearing-out relay. 'All parts of the device are therefore returned to .normail in condition-to receivcanothcr selecting combination of impulses. The paper carriage is moved forward step bystcp as the characters are printedvas' hereinafter dcscrihed.

If it is desired to print. a character shown on the lower row of the type whcel, a combination of impulses is scnt from the distant station'to energize, irst, the polar relay 4 with the first impulse, and then the polar relay (3 with the second impulse. This combination of impulses will energize the shift relay 46 one winding of which is shown on Fig. 1 and the other winding on Fig. 2, current for the winding shown on Fig. 2 being obtained from the source of current 120. As this relay is selected and energized in a manner analogous to the printing magnet as above described, a detailed description of the circuits is considered unnecessary. As a result of the selection of this relay, a circuit is completed which may be traced from battery 112, clearing-out relay, 114, energizing winding of the shift lock relay 121, armature of shift relay l(i to ground. As av result of the closure of this circuit, the following occurs: tlhi'l't magnct 220 is energized from battcry 211?, through the locking winding and arnniturooi shill lock relay 121, the armatures of bacl; shEi't relay 313' and reset relay 26, to ground. Clearing-out relay 114 attracts its tll'lllutlilt 117, removing ground from the selecting circuit of the shift relay 413, allowing thc selecting circuit to return to normal. Shift. magnet 220 attracts its armature and the roller on the outer end thereof move the type wheel 2% upward on the shaft 201 and into position to print the characters on the lower row thereof into printing position.

The shift magnet EZZO'will remain cncr gized owing to the locking circuit ahovc traced and the subsequent characters so lected will be those on the lower row 01 the ty e-wheel until the locking circuit is brokcn eit her by the encrgizatioi'i of the rcsct relay 26 or the back shift relay 36.

If it is desired to move the pa per carriage forward as in leaving a space between successive words or in paragraphing. a combination 0t nnpulses is sent trom the distant station to select the spacing relay 16. The

' selection of the spacing relay 16 closes a circuit tl'irough the spacing magnet 201, which may be traced from battery 11;. armature 1'13, spacing magnetv 204', slow-acting relay,

1:22, armature of the space magnet 111, to ground. The spacing magnet is therefore energized and by mcans oi the ratchct and pawl 225 and 2213 the carriage i moved forward through the spat-c of one lcttcr. The

energization of thc slov-acting rclay 122 completes a circuit through the clcariug-out relay 11 1, from battcry 112, through the armature ot slow-acting rclay 122, to ground, and the clearing-out relay 11- 1, by its arma ture 117, removes ground from the selecting circuit of the spacing relay 111, allowing the selecting circuit to rcturnto normal.

Thc papcr carriageis movcd, forward stop by step as the charm-tors are. printed, and when it has reached the limit 01'' its travel a combination of impulses is sent from the distant station to energize the paragraph relay fit). It will he noted that in energizing this paragraph relay the rcsct rclay 211 is energized simultaneously therewith. lioth rclays attract their armatures with the following result: A. circuit is closed which may be traced from battery 227. through the reset magnet armature of reset relay 215, to ground. Armature of the reset magnet 228 is attracted. removing the pawl 229 from engagement with the ratchet ZS-Aland the paper carriage is rcturncd to its normal or initial position under the influence of spring .231. Whcn the paper carriage reaches its initial position it moves-into engagcnicut with spring 23-32, moving this spring and the spring 231% into engagement. with the springs rill-1 and 2 :35, respectively. A circuit for tho papcr lift magnet 9.31) is thcrcupon complctcd tron; battery 22'? which 7 contact springs 215 5 and 235, paper lift magnet 23h, arinaturcs oi? the paragraph relay 553 and the reset iiclay 211, to ground. The armature at the paper lift magnet 236 moves the 1ncinher 237 into engagement withthe member 238. gripping the paper therehetween, and lifting ituipward a suliicient distance to insure a clean surface for the next line of characters. i i hcn the armature of this paper lift magnet 23o is fully attracted .the extrusion 23.) thereof moves contact spring 2 10 into engagement with the contact spring 1-11. completing a circuit for thoclearingout rclay 11 1-, which circuit may be traced from battery 119.. clearingout rclay 111, contact, springs 2-11 and 240, to ground. The chairing-out relay 11st as before, sends the selecting circuit and all parts of the device back to normal condition.

lf-it is desired to reset the paper carriage at any point in its travel without at the same time energizing the paper lift magnet,

a combination of impulses to energize the reset relay 26 alone is sent from the distant station. As before, reset relay 26 attracts l to break the locking circuit throughthe se its armature, energizing the reset magnet 228 from the battery 227, removing the pawl 22%) from engagement with the ratchet 230 and the paper carriage is returned to its normal or initial position under the influence of the spring 281. As the paragraph relay 56 has not been energized the energizing circuit for the paper lift magnet will not be completed by the springs 233 and Q35. A circuit for the clearing-out relay will, however, be completed from the battery 111', through the contact springs 232 and io-l, armature of the paragraph relay 56, armature of the reset relay 26, to ground, sending thepolar relay circuit and all parts of the device back to normal.

While I have shown on the drawings a plurality of batteries or sources of current, it will be understood that where such bats tcries or sources of current are of the same character orpotentiah and located at the same place, they may be and preferably are one andthe same battery or source of current.

\Vhat I claim is:

In a prii'iting telegraph receiver, the t-ombinationof a plurality of type magnets l'iaviug two windin s and arranged in groups, one windingo't each group of magnets heir--5 in a dill'erent loop of a selecting circuit, means comprising a plurality of relaysfor selectively energizing one loop of a group of type magnets in response to an impulse received from a distant station, a unit relay in the selecting circuit closing on its energization a locking circuit for itself, a

second impulse received from a distant station operatively selecting one of the remain ing line relays to close the second loop and initiate the printing operation.

2. In a printing telegaph receiver, the con'ibination with a plurality of type 1nag nets having two windings, one winding of each group of type magnets being arranged in different loops of a selecting circuit, line' controlled self-locking mechanism for successively closing break points in the' select ing circuit in response to a combination of impulses received from a distant station to select a predetern'nned type magnet and initiate the printing thereot.

3 111 a printing' telegraph receiver, the.

combination of a plurality of polar line relays, of a plurality of groups of type magnets selectively energized by a combination of impulses received by the polar line relays from a' distant station, a. locking circuit for each of the polar relays, each. included in the selecting circuit of a group of type mag-- nets, and operating to lock the selected line relays in operative condition, means operated by a selected type magnet to initiate the printing ope-ration, means operated at the termination of the printing operation lected line relays, whereby the line relays are. returned to normal condition.

4. In a printing telegraph receiver, the combination with a plurality of type magnets, selecting circuits therefor, each selecting circuit comprising a plurality of loops, each loop passing through a dilferent Winding of the type magnets, and including a by all parts of the device are returned to f normal position.

5. In a printing telegraph receiver, the combination in a line circuit, of a plurality of polarized line relays therein divided into two groups, one group being connected to each main line conductor, each relay being responsive to a characteristic impulse re-- ceived from a distant station, and means for locking the selected line relays in operative position.

6. In a printing telegraph receiver, the combination of two main conductors, a line circuit, said circuit comprising two groups of polarized relays, one group being connected to each main line conductor, and each, relay in each group being responsive to a characteristic impulse received over the main line conductors, a locking circuit for eachrelay operating to hold the said relay in operative condition, a plurality of type magnets selectively operated by acombination of two impulses received by the line circuit, a printing magnet operated by said selecting circuit to print the character selected by the line circuit, and means operated on the completion of the printing operation to break the locking circuit through the selected line relays, whereby all parts of the device are returned to normal position.

7. A selecting circuit comprising a plurality of marginal magnetseach having two cumulative windings, both of which must receive current to cause operation, said Windings being arranged in groups, means for selectively completing a circuit through a group f windings, and means for selectively establishing a circuit through a second group of windings, one of said second group being associated with the same magnet as one of the windings of said first group.

8. A selecting circuit comprising a plurality of magnets each havingtwo windings,

both of Which must receive current to cause operation, said windings being arranged in groups, means for selectively establishing and holding a circuit through a group of group of windings, one of said windings, means for selectively establishing and holding a circuit through a second group being associated with the same magnet as one of the windings in the first group selected, and means controlled by said second circuit for causing an increase in the flow of current through both circuits.

9. A. selecting circuit comprising a plurality of marginal magnets each having two cumulative windings, both of which must receive current to cause operation, said windings being arranged in a plurality of groups, means for selectively establishing a circuit through all the magnet windings oi a group, holding means for said circuit, and means for selectively establishing and holding a circuit through a second group of magnet windings.

10. A selecting circuit comprising a plurality Of magnets each having two windings, both or which must receive current to cause operation, said windings being arranged in groups, switching means, means for selec tively establishing a circuitfor all themagnet windings of one group through said switching means, means in said circuit for establishing a holding circuit through said group of windings, and means for selectively establishing and holding a circuit through a second group'oi magnet windings independent of: said switching means.

In witness whereof, I hereunto subscribe my name this 21st day of Noyember A. D., 1911.

CHARLES E. SCRIBNER.

Witnesses IRVING MACDONALD, F. P. MoINrosH. 

